diff --git a/modules/45-logic/28-logical-negation/description.es.yml b/modules/45-logic/28-logical-negation/description.es.yml
index 839af7c7..d666e63f 100644
--- a/modules/45-logic/28-logical-negation/description.es.yml
+++ b/modules/45-logic/28-logical-negation/description.es.yml
@@ -91,6 +91,11 @@ instructions: |
   isPalindrome('hello');    // => false
   isNotPalindrome('level'); // => false
   isNotPalindrome('hello'); // => true
+
+  // Las cadenas pueden pasarse a las funciones en cualquier caso
+  // Por lo tanto, primero convierte la cadena a minúsculas con el método .toLowerCase()
+  isPalindrome('Wow');     // => true
+  isNotPalindrome('Wow');  // => false
   ```
 
   Usa los métodos `.split('')`, `.reverse()`, `.join('')` para invertir la cadena.
diff --git a/modules/45-logic/28-logical-negation/en/EXERCISE.md b/modules/45-logic/28-logical-negation/en/EXERCISE.md
index 94e5ad74..44968878 100644
--- a/modules/45-logic/28-logical-negation/en/EXERCISE.md
+++ b/modules/45-logic/28-logical-negation/en/EXERCISE.md
@@ -8,6 +8,11 @@ isPalindrome("level"); // => true
 isPalindrome("hello"); // => false
 isNotPalindrome("level"); // => false
 isNotPalindrome("hello"); // => true
+
+// Strings can be passed to the functions in any case
+// So first convert the string to lowercase with the .toLowerCase() method
+isPalindrome("Wow"); // => true
+isNotPalindrome("Wow"); // => false
 ```
 
 Use the `.split('')`, `.reverse()`, `.join('')` methods to reverse the string.
diff --git a/modules/45-logic/28-logical-negation/es/EXERCISE.md b/modules/45-logic/28-logical-negation/es/EXERCISE.md
index 42859766..e6ff12d0 100644
--- a/modules/45-logic/28-logical-negation/es/EXERCISE.md
+++ b/modules/45-logic/28-logical-negation/es/EXERCISE.md
@@ -8,6 +8,11 @@ isPalindrome("level"); // => true
 isPalindrome("hello"); // => false
 isNotPalindrome("level"); // => false
 isNotPalindrome("hello"); // => true
+
+// Las cadenas pueden pasarse a las funciones en cualquier caso
+// Por lo tanto, primero convierte la cadena a minúsculas con el método .toLowerCase()
+isPalindrome("Wow"); // => true
+isNotPalindrome("Wow"); // => false
 ```
 
 Usa los métodos `.split('')`, `.reverse()`, `.join('')` para invertir la cadena.
diff --git a/modules/45-logic/28-logical-negation/ru/EXERCISE.md b/modules/45-logic/28-logical-negation/ru/EXERCISE.md
index 8b41440b..0c631ef2 100644
--- a/modules/45-logic/28-logical-negation/ru/EXERCISE.md
+++ b/modules/45-logic/28-logical-negation/ru/EXERCISE.md
@@ -8,6 +8,11 @@ isPalindrome("level"); // => true
 isPalindrome("hello"); // => false
 isNotPalindrome("level"); // => false
 isNotPalindrome("hello"); // => true
+
+// Строки в функции могут быть переданы в любом регистре
+// Поэтому сначала приведите строку к нижнему регистру методом .toLowerCase()
+isPalindrome("Wow"); // => true
+isNotPalindrome("Wow"); // => false
 ```
 
 Используйте метод `.split('')`, `.reverse()`, `.join('')` для разворота строки.